Luis Ridao Cruz wrote: > R-help, > > I have a data frame with one column containing roman numbers > The data are not sorted as : I II III IV V VI VII VIII IX > X XI XII XIII XIV XV > > Using data[order(data$Roman),] does not do the job. > > How can this be done? > >
Someone went there before you (and me): library(utils) data[order(as.roman(data$Roman)),] (possibly ....as.character(data$Roman).... if it has been read as a factor) -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
